Switch 'cont' to 'again' everywhere. Close #2229.
diff --git a/src/rustc/metadata/encoder.rs b/src/rustc/metadata/encoder.rs
index 1e50f11..f68995d 100644
--- a/src/rustc/metadata/encoder.rs
+++ b/src/rustc/metadata/encoder.rs
@@ -140,7 +140,7 @@
      items: ~[@class_member], path: ~[ident], &index: ~[entry<str>]) {
     for items.each |it| {
      alt ast_util::class_member_visibility(it) {
-          private { cont; }
+          private { again; }
           public {
               let (id, ident) = alt it.node {
                  instance_var(v, _, _, vid, _) { (vid, v) }
@@ -158,7 +158,7 @@
                             &index: ~[entry<str>]) {
     for module.items.each |it| {
         if !reachable(ecx, it.id) ||
-           !ast_util::is_exported(it.ident, module) { cont; }
+           !ast_util::is_exported(it.ident, module) { again; }
         if !ast_util::is_item_impl(it) {
             add_to_index(ebml_w, path, index, it.ident);
         }